Protesters gather at IRS in Philly, Pittsburgh

PHILADELPHIA (AP) — About 15 people holding signs and "don't tread on me" flags gathered outside of one of Philadelphia's Internal Revenue Service offices Tuesday to protest what they say is unfair treatment of conservative groups, and another group also rallied in Pittsburgh.

Jerry Chiccarine, 71, from outside Philadelphia, accused the IRS of corruption and said the government is too big and there needs to be more accountability.

Tea party groups "were picked on by the IRS" and improperly targeted because of their political beliefs, said Bill Rodebaugh, 70, of the Northeast Philadelphia Tea Party Patriots.